Audi A3 2009 1.6 petrol BSE engine sluggish when started for about 100 yards then ok??

what pressure? IDLE and THROTTLE please

if its 40-50 bar idle and 80-100 on throttle the high pressure is OK.

also tell me fuel pressure on ignition on and not engine running

As long as you didn't start it & they got it all the gasoline out you're fine.

The "won't rev" part sounds like a preventative so you won't destroy the engine from cold start-up. The sluggish part sounds like bad fuel or spark plugs. Where do you buy your fuel and what octane is it? and have you Changed your plugs?

Did you change fuel filter???

Could be a whole gambit of problems

1) Check the HT system is good, contacts clean, good spark on the plugs.
2) Check the water temperature sensor.
3) Check the air filter isn't clogged.


Finally, here's a pretty good Renault forum, the solution could be here:-

http://www.renaultforums.co.uk/

If you can physically see there's no spark at the sparkplugs then you need to check the HT leads(spark plug leads), resistance should be no more than 14 Kilo Ohms per foot of cable! If they're ok check the coil pack for signs of arcing to earth(very common in these cars!) and if they are getting a 12 Volt supply from the ignition, if ok then check the amplifier which is screwed to the top of the air filter housing to see whether voltage is getting through from there, if ok check the crankshaft position sensor! (Also a common fault on these) Has your vehicle got an immobilizer? These when activated, disable the engine control unit and stop the signals from getting to your ignition amplifier module!

Your local auto recycler will have the list of doners.

Did you found out the problem? i have the same problem and i want to find out,

could be a sensor problem

have you looked at the engine earth/ground cable, run another earth from the negative terminal to the body(wheel arch) and then to the engine block and try again. As you would know its a proccess of illimination and this was the most simple thing that came to mind. Let me know how it goes.